Next Steps with M2
Your M2 can blink its LED, now what?
If you want to query the ECU, all you need to do is upload this scanner sketch to M2:
Craig has a number of programs that are based around socketcan and should, in theory, work with the slcan interface possible with M2RET. Examples: ICSim, UDSim, CaringCaribou. I haven’t tested them with an M2 but I think we ought to do so as they provide some useful things we would otherwise lack. I know that CaringCaribou didn’t work well when I tried it with a GVRET device a few years ago but the situation might be different now.